Approximately 80% of these cases occur sporadically, with the remaining 20% being hereditary and associated with the RET mutation. Sporadic MTC typically appears in individuals aged 50 to 60 years, similar to this case, while hereditary cases usually present in the second and third decades of life [1,2]. Patients with MTC usually have a painless mass in the upper neck area. Here, RET is linked to medullary thyroid gland carcinoma.